U.S. seeks seismic mitigation civil work at 1,076.68-MW Bonneville

The Corps of Engineers seeks bids for seismic mitigation work on the Ambursen Section of 1,076.6-MW Bonneville Lock and Dam on the Columbia River in Oregon. Bids are to be due about Dec. 31, 2009.

The work entails filling the north wall of the old navigation lock, referred to as the Ambursen Section, with concrete to reduce the risk of failure during design seismic loading at Bonneville. (HydroWorld 8/10/09) Monoliths 20-25 of the old lock north wall are hollow sections. They are to be filled with concrete to form new gravity dam sections.

The work, which is valued at between $5 million and $10 million, involves foundation preparation, concrete and gravel placement, control and treatment of seepage water, anchoring, and grouting.

A pre-solicitation notice may be obtained from the Federal Business Opportunities Internet site, www.fbo.gov, by entering Solicitation No. W9127N10R0002 in the “Keyword/Solicitation #” box. The solicitation is expected to be issued about Nov. 30, with bids expected to be due Dec. 31.

For information, contact Barbara White, Corps of Engineers, Portland District, Contracting Division (CENWP-CT), P.O. Box 2946, Portland, OR 97208-2946; (1) 503-808-4621; E-mail: barbara.a.white@usace.army.mil.

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